= Known Issues =
* Some extensions might not work fully. But please file bugs for any of these issuesif you find an extension that doesn't work!* Some video player issues on YouTube and Twitch. ({{bug|1619370}}, {{bug|1620341}})
* Cross-site iframes appear empty when printed.
* Cross-site iframes appear empty in screenshots.
* DevTools support for cross-site iframes with fission is incomplete.
* Attempting to debug extensions or workers from a non-fission window can cause crashes.
* Resource Linux resource exhaustion issues with large tab counts, including:
** Excessive memory usage
** File descriptor exhaustion issues
** X11 connection exhaustion on Linux* Picture-in-Picture doesn't work on cross-origin iframes ({{bug|15758681635451}})
= Enabling Fission =